Molding acoustic, electromagnetic and water waves with a single cloak
We describe two experiments demonstrating that a cylindrical cloak formerly introduced for linear surface liquid waves works equally well for sound and electromagnetic waves. This structured cloak behaves like an acoustic cloak with an effective anisotropic density and an electromagnetic cloak with...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Nature Publishing Group
2015
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| Online Access: | http://hdl.handle.net/1721.1/98424 https://orcid.org/0000-0001-5713-629X |
| _version_ | 1811070926234583040 |
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| author | Xu, Jun Jiang, Xu Georget, Elodie Abdeddaim, Redha Geffrin, Jean-Michel Farhat, Mohamed Sabouroux, Pierre Enoch, Stefan Guenneau, Sébastien Fang, Nicholas Xuanlai |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Xu, Jun Jiang, Xu Georget, Elodie Abdeddaim, Redha Geffrin, Jean-Michel Farhat, Mohamed Sabouroux, Pierre Enoch, Stefan Guenneau, Sébastien Fang, Nicholas Xuanlai |
| author_sort | Xu, Jun |
| collection | MIT |
| description | We describe two experiments demonstrating that a cylindrical cloak formerly introduced for linear surface liquid waves works equally well for sound and electromagnetic waves. This structured cloak behaves like an acoustic cloak with an effective anisotropic density and an electromagnetic cloak with an effective anisotropic permittivity, respectively. Measured forward scattering for pressure and magnetic fields are in good agreement and provide first evidence of broadband cloaking. Microwave experiments and 3D electromagnetic wave simulations further confirm reduced forward and backscattering when a rectangular metallic obstacle is surrounded by the structured cloak for cloaking frequencies between 2.6 and 7.0 GHz. This suggests, as supported by 2D finite element simulations, sound waves are cloaked between 3 and 8 KHz and linear surface liquid waves between 5 and 16 Hz. Moreover, microwave experiments show the field is reduced by 10 to 30 dB inside the invisibility region, which suggests the multi-wave cloak could be used as a protection against water, sonic or microwaves. |
| first_indexed | 2024-09-23T08:43:51Z |
| format | Article |
| id | mit-1721.1/98424 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:43:51Z |
| publishDate | 2015 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/984242022-09-30T10:47:38Z Molding acoustic, electromagnetic and water waves with a single cloak Xu, Jun Jiang, Xu Georget, Elodie Abdeddaim, Redha Geffrin, Jean-Michel Farhat, Mohamed Sabouroux, Pierre Enoch, Stefan Guenneau, Sébastien Fang, Nicholas Xuanlai Massachusetts Institute of Technology. Department of Mechanical Engineering Xu, Jun Jiang, Xu Fang, Nicholas Xuanlai We describe two experiments demonstrating that a cylindrical cloak formerly introduced for linear surface liquid waves works equally well for sound and electromagnetic waves. This structured cloak behaves like an acoustic cloak with an effective anisotropic density and an electromagnetic cloak with an effective anisotropic permittivity, respectively. Measured forward scattering for pressure and magnetic fields are in good agreement and provide first evidence of broadband cloaking. Microwave experiments and 3D electromagnetic wave simulations further confirm reduced forward and backscattering when a rectangular metallic obstacle is surrounded by the structured cloak for cloaking frequencies between 2.6 and 7.0 GHz. This suggests, as supported by 2D finite element simulations, sound waves are cloaked between 3 and 8 KHz and linear surface liquid waves between 5 and 16 Hz. Moreover, microwave experiments show the field is reduced by 10 to 30 dB inside the invisibility region, which suggests the multi-wave cloak could be used as a protection against water, sonic or microwaves. 2015-09-09T16:07:34Z 2015-09-09T16:07:34Z 2015-06 2014-10 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/98424 Xu, Jun, Xu Jiang, Nicholas Fang, Elodie Georget, Redha Abdeddaim, Jean-Michel Geffrin, Mohamed Farhat, Pierre Sabouroux, Stefan Enoch, and Sébastien Guenneau. “Molding Acoustic, Electromagnetic and Water Waves with a Single Cloak.” Scientific Reports 5 (June 9, 2015): 10678. https://orcid.org/0000-0001-5713-629X en_US http://dx.doi.org/10.1038/srep10678 Scientific Reports Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature Publishing Group |
| spellingShingle | Xu, Jun Jiang, Xu Georget, Elodie Abdeddaim, Redha Geffrin, Jean-Michel Farhat, Mohamed Sabouroux, Pierre Enoch, Stefan Guenneau, Sébastien Fang, Nicholas Xuanlai Molding acoustic, electromagnetic and water waves with a single cloak |
| title | Molding acoustic, electromagnetic and water waves with a single cloak |
| title_full | Molding acoustic, electromagnetic and water waves with a single cloak |
| title_fullStr | Molding acoustic, electromagnetic and water waves with a single cloak |
| title_full_unstemmed | Molding acoustic, electromagnetic and water waves with a single cloak |
| title_short | Molding acoustic, electromagnetic and water waves with a single cloak |
| title_sort | molding acoustic electromagnetic and water waves with a single cloak |
| url | http://hdl.handle.net/1721.1/98424 https://orcid.org/0000-0001-5713-629X |
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